Belt size

[03BlackVert226]

Hey guys. I recently picked up my 03 cobra and want to change out the belt because it is worn and squealing but not sure of the proper belt size. Its on a 4.0 richard racing pulley. Any help would be greatly appreciated!

 

[94 Cobra R]

Why not pull it and measure it?


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[GM2Ford]

This should help you.

 

[03BlackVert226]

Thanks but my car has a 3.4 whipple.

 

[94 Cobra R]

If you don’t want to measure it, you can take it down to a parts house and they usually have belt measuring tools.....or if the part number is on it still, that is the length.

 

[GM2Ford]

Thanks but my car has a 3.4 whipple.

My car has a 2.9 Whipple. I used that chart above that I posted to figure out my belt size. Did the math for my pulleys, idlers, etc. Done.

 

[ShootyMCstabby]

I used a Gates k080785 with my 4.0 pulley. But might not work for u.

Any #'s at all on the belt visible? Can you bump the ign to get the belt to move to see if any #'s are on the belt?. Otherwise your going to have to pull it and measure. Or take it to someone who can.

 

[03BlackVert226]

Ok thanks

 

[03BlackVert226]

I dont see any numbers at all it is too worn..

 

[94 Cobra R]

Seriously, pull the belt, take it to the parts house and let them measure it for you. No second guessing that I way.

 

[BADBOYSVT]

there any change you can read the part number off the old belt . like trying .

 

[03BlackVert226]

why do you say this wont work on my setup?

 

[ShootyMCstabby]

I used a Gates k080785 with my 4.0 pulley. But might not work for u.

Any #'s at all on the belt visible? Can you bump the ign to get the belt to move to see if any #'s are on the belt?. Otherwise your going to have to pull it and measure. Or take it to someone who can.

why do you say this wont work on my setup?

Are you asking me? cause if you re-read,you see I don't say " won't " I say it might not work for you. And the reason is it seems people have different diameter pulley set ups.
I think I am running 3# 100mm and 1# 90mm. With a stock alt pulley and stock tension-er.

 

[03BlackVert226]

Oh ok i see. Thanks for the reply i am still learning about the car but i will look more into this next season.